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Finding the Fourth Proportional to 74,592.63, 102,940.00 and 40,603.30

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Solution

The fourth proportional to 74,592.63, 102,940.00 and 40,603.30 is: 56,033.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,592.63 : 102,940.00 = 40,603.30 : x
  2. Step 2: Convert to fraction form
    74,592.63/102,940.00 = 40,603.30/x
  3. Step 3: Cross multiply
    74,592.63x = 102,940.00 × 40,603.30
  4. Step 4: Simplify right side
    74,592.63x = 4,179,703,343.14
  5. Step 5: Solve for x
    x = 4,179,703,343.14/74,592.63
  6. Step 6: Final answer
    x = 56,033.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.